Xiongyu Chen

RESUME

Xiongyu Chen

Postdoctoral Fellow

Office Address: CPE 3.104

Email Address: xiongyu@utexas.edu

LinkedIn URL: https://www.linkedin.com/in/xiongyu-chen-07495a57/

Google Scholar: https://scholar.google.com/citations?user=bT9SfDwAAAAJ&hl=enx

Personal webpage:

https://sites.google.com/view/xiongyu-chen/home

RESEARCH HIGHLIGHT

In general, I study flow and reaction in porous and fractured media to investigate how to sustainably produce subsurface energy. My research topics include CO2 sequestration, CO2 enhanced oil recovery, natural gas hydrates and enhanced oil recovery using chemicals, gas and foam. My methods include in situ flow and reaction experimentation in rocks, cross-scale imaging (X-ray medical CT & micro CT), phase behavior tests, modeling and high-performance flow simulations. I am currently working on the following two projects.

 

RESEARCH PROJECTS

Project A: Chemical EOR using surfactant polymer in carbonate at high temperature, high salinity and high hardness condition

Waterflood in carbonate reservoirs only recovers one third of original oil in place, which makes chemical EOR an economic approach to enhance oil recovery after waterflood. At high temperature, high salinity and high hardness conditions, injecting surfactant polymer solution is an effective method to enhance oil recovery. However, the formulation of surfactant polymer solutions at these extreme conditions are unknown. This project aims to use phase behavior tests, coreflood experimentation and chemical analysis to identify the right formulations. After being proven to achieve ultra-low IFT and reduce oil saturation to below 10% at the lab scale, these formulations can be used for field applications.

Project B: Gas EOR in fractured carbonate using gas and foam injection

Natural fractures are common in carbonate reservoirs. These fractures create huge permeability heterogeneity that prevent injection fluid from entering oil-saturated matrix. Gas injection and foam injection are two effective strategies to enhance oil recovery in fractured reservoirs. Reliable field applications of these two strategies require a deep understanding of displacement and diffusion at the fracture-matrix interface and within the matrix, which is not currently available. This project aims to use micro-scale coreflood experimentation and X-ray micro-CT to study the displacement and diffusion mechanisms of gas, oil, water and foam in fractured carbonates. The new knowledge gained by this project can guide us to better design gas and foam injection protocols for field application.